using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		int NN = (int) 1e6;
		bool[] isPrime = new bool[NN];
		List<long> P = new List<long>();
		for(int i=2;i<NN;i++) isPrime[i] = true;
		for(int i=2;i<NN;i++){
			if(!isPrime[i]) continue;
			P.Add(i);
			for(int j=i+i;j<NN;j+=i) isPrime[j] = false;
		}
		
		//P.Reverse();
		
		long ans = 0;
		foreach(var a in A){
			long unit = a;
			long piece = 1;
			long move = a;
			foreach(var i in P){
				if(unit % i == 0){
					while(unit % i == 0){
						piece *= i;
						move += a / piece;
						unit /= i;
					}
				}
			}
			if(unit != 1) move += 1;
			ans += move;
		}
		
		Console.WriteLine(ans);
		
		
		
		
		
	}
	int N;
	long[] A;
	public Sol(){
		N = ri();
		A = rla();
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}